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Marathon Aluminator Cast Aluminum Retrofit Roof Drain, 2-6 in. with ProSeal
Regular price $417.00Orders start at $399 — combine any items to reach the minimum. Learn more
Marathon Aluminator Cast Aluminum Retrofit Roof Drain, 2-6 in. with ProSeal
The Marathon Aluminator is an all-aluminum retrofit roof drain built for quick, easy installation over existing drain bodies. It is constructed of heavy gauge spun aluminum with a heavy duty cast aluminum ring and strainer, and includes a mechanical ProSeal to prevent water backflow. Sizes from 2 in. to 6 in. are available; each order unit is one drain.
Key Features:
- Retrofit design: All-aluminum retrofit drain allows quick and easy installation over existing drains.
- Heavy gauge spun: Constructed of heavy gauge spun aluminum for durability.
- Maximum drainage: Heavy duty cast aluminum ring designed for maximum drainage.
- Cast strainer: Cast aluminum strainer helps keep debris out of the drain.
- ProSeal included: Included ProSeal provides a strong mechanical seal to prevent water back-up issues.
- Stronger studs: Larger stud diameter for increased strength.
Specifications Table:
| Specification | Details |
|---|---|
| Brand | Marathon Roofing Products |
| Sell unit | 1 drain |
| Product line | Marathon Aluminator Aluminum Retrofit Roof Drain |
| Available sizes | 2 in. with ProSeal, 3 in. with ProSeal, 3 in., 4 in. with ProSeal, 4 in., 5 in., 6 in. with ProSeal |
| Material | Aluminum (heavy gauge spun aluminum body; cast aluminum ring and strainer) |
| Finish / texture | Mill |
| Dimensions | Drain outlet sizes 2 in., 3 in., 4 in., 5 in., 6 in. |
| Included components | ProSeal mechanical seal on ProSeal variants; cast aluminum strainer |
| Intended use | Retrofit roof drain replacement on commercial roofs |
| Key features | Larger stud diameter for increased strength; cast aluminum ring for maximum drainage |
Fit and Compatibility:
A retrofit drain that installs over existing roof drain bodies; match the drain size (2-6 in.) to your existing outlet. Confirm compatibility with your membrane system and clamp ring; membrane and flashing materials are sold separately.
Frequently Asked Questions (FAQ):
Q: What sizes are available?
A: 2 in., 3 in., 4 in., 5 in., and 6 in.; ProSeal is included on the 2, 3, 4, and 6 in. ProSeal variants and listed separately on some 3 and 4 in. items.
Q: What is included in the box?
A: One retrofit drain with cast aluminum strainer; ProSeal variants include the mechanical ProSeal seal.
Q: What does ProSeal do?
A: It creates a strong mechanical seal designed to prevent water back-up and backflow issues.
Q: Why retrofit rather than replace?
A: The Aluminator installs quickly and easily over the existing drain, avoiding costly demolition of the drain assembly.
Q: What is it made of?
A: Heavy gauge spun aluminum with a heavy duty cast aluminum ring and cast aluminum strainer.
Q: How do I choose a size?
A: Match the drain outlet diameter to your existing plumbing; when in doubt, verify the pipe size before ordering.
Expert Verdict — Reviewed by the SuperArbor Pro Desk
Measure the existing drain outlet and bowl diameter before ordering, and select a ProSeal variant wherever backflow at the retrofit joint is a concern. Clean the existing drain area and seat the ProSeal evenly for a watertight mechanical seal. Cast strainers should be checked and cleared after installation and during routine roof maintenance.
Retrofit drain work often means opening the roof membrane; keep the work area dry, maintain a safe distance from open drains, and follow fall-protection requirements.
Upgrade failing drains quickly with the Marathon Aluminator aluminum retrofit roof drain in the size your roof needs.
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